Type-writing machine.



E. M. BRANSON.

TYPE WRITING MAGHINE.

APPLIOATIOK FILED APR. 20, 1909.

991,692. P11111911 May 9,1911,

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EDWIN F. M. BRANSON, OF LEICESTER, ENGLAND, ASSIGNOR TO THE MONARCH TYPE- WRITER COMPANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented May 9, 1911.

Application filed April 20, 1909. Serial No. 491,041.

To all whom it may concern:

Be it known that I, EDWIN F. M. BRAN- SON, subject of the King of Great Britain and Ireland, and resident of Leicester, England, have invented certain new and useful Improvements in Type-Writing Machmes, of which the following is a specification.

My invention relates particularly to type bar hangers and has for its main object the provision of means for adjusting the hanger arms to the type bar pivot ends in the first place when the type bars and hangers are assembled and subsequently when wear takes place between the pivot ends and the bearings in the hanger.

To these ends my invention consists in the features of construction and combinations and arrangements of parts hereinafter more fully described and particularly pointed out in the appended claims.

In the accompanying drawings :Figure 1 is a side view partly in section of a portion of a typewriting machine embodying my improvements, said view showing two hangers mounted on a segment and two type bars pivotally connected to said hangers. Fig. 2 is a plan view of the longer one of the two hangers shown in Fig. 1, and showing also a section of the type bar and its pivot. Fig. 3 is a perspective view of the shorter one of the hangers shown in Fig. 1, but omitting the type bar. Fig. 4 is a perspective view of another form of hanger and type bar. Fig. 5 is a plan view of still another form of hanger embodying my invention, a section of a type bar being shown in connection with said hanger, and also a support for the hanger. Fig. 6 is a central vertical section of the type bar, the hanger and the support shown in Fig. 5.

Referring more particularly to Figs. 1, 2 and 3, 1 designates a type bar segment such as is employed in the Monarch typewriter; 2, a type bar hanger secured by a screw 3 to the forward face of the segment; 4, a type bar pivotally attached to said hanger 2; 5, second hanger attached by a screw 6 to a rearward face 7 of the segment, the segment being stepped as shown and as customary in said Monarch machine. Normally the type bars rest upon a pad or support 8.

Referring more particularly to Fig. 2 the hanger is shown as formed of a single piece of sheet metal folded in a manner to provide parallel type bar bearing arms 9 united by a rivet or tie-piece 10, extending crosswise between said arms. Back of said rivet the plies of the hanger are bent inwardly as at 11 and 12, preferably until they touch but not necessarily so. From these bends or this neck or contracted port-ion the sides of the hanger spread outas at 13 and 14 leaving aspace 15 sufiiciently large for the passage of the fastening screw 3 which preferably is provided with a' washer under its head. Back of the portions 13 and 14 the sides of the hangers are contracted again as at 16 and 17 and in a manner such as to form a beveled or tapering throat 18. In rear of the contracted portion 16 and 17 the sides of the hanger spread out again and merge into the end loop portion 19 which is threaded axially of the hanger to receive a screw 20 having a tapering or conical point 21 adapted to the tapering throat 18.

At the forward or free ends of the parallel arms 9, 9 are formed one in each arm a tapering socket or bearing 22 adapted to receive the tapering end 28 of a pivot 24 secured transversely in the type bar 4 in the usual way.

The purpose of the screw 20 is to efiect an adjustment of the arms 9, 9 relatively to the conical pivot ends of the type bar. This is accomplished simply by turning in the screw 20 and causing its conical end to wedge apart slightly the throat formed by the bends 16 and 17. The effect of this wedging is to cause the sides of the hanger back of the rivet or cross-tie 10 to move outwardly and the arms or portions 9, 9 to move inwardly, the sides as a whole acting as levers and fulcruming about the ends of the rivet or cross-tie. As the forward portions 9, 9 are thus caused to move toward each other, their bearing portions 22 move toward the bases of the conical pivot ends and hence any lost motion or play between the pivots and their bearings is taken up by this adjustment or movement of the hanger arms. If in making the adjustment the screw should be turned too far so as to cause a binding of the pivotal joint the screw may readily be backed off to the proper extent to give freedom of action to the type bar without lateral play.

Referring more particularly to Fig. 3 the hanger is folded up as usual from sheet metal cut out to proper form. In this in- V stance there are parallel side arms 9 which receive the type bar and depending arms 9 provided for the purpose of securing the hanger to the segment, the body of the fastening screw 6 passing between the arms 9 These arms are preferably held together by a rivet 9 to prevent them from spreading. The arms 9 are united by a rivet or crosstie 10 and at the rear portions of said arms there are inward bends 16 17 to form a tapering throat 18 as in Fig. 2, and back of these bends is a connecting loop 19 which is threaded in alinement with the tapering hroat and centrally of the hanger, longitudinally considered. In this threaded hole is placed an adjusting screw 2O which acts in the manner described with reference to the screw 20 in Fig. 2. Each of the arms 9 at its forward end is formed with a conical seat or depression 22 for the ends of a tapering pivot inserted in the type bar.

Referring now to Fig. 1 the hanger is constructed for a machine of the under strike description, the previously described hangers being made particularly for a front strike machine. In Fig. i the hanger arms 9, 9 are provided with conical bearings for the conical pivots on the type bar t and the side plates of the hanger are connected by a rivet 10. The rear ends of the side plates are formed with inward bends 16 and with a loop 19. The inward bends from the throat 18 before described and the loop is provided with an adjusting screw 20. The screw has a tapering end adapted to cooperate with the tapering throat for adjusting the hearings in the manner before described.

Referring now to Figs. 5 and 6 it will be noted that the hanger is of somewhat the same construction as that shown in Fig. 2, the exception being that the rearmost end is not provided with the bends 16 and 17. In the modification, the bends 11 and 12 are made to produce the tapering throat 18 and the screw 20 is elongated to reach said throat. The screw has a bearing in the rearmost loop 19 and has a conical point extending to the throat 18 The adjustment of the bearings is effected on the same principle as in the other views. It will be observed in this modification also that the hanger is provided with a base plate 25 whereby the hanger may be attached to the segment by a screw 3 In each of the views it will be observed that the rear end of the hanger is formed or provided with a closed loop in which an adjusting screw is seated and that said screw is arranged longitudinally of the hanger at about the median line thereof pointing toward the type bar pivot and at right angles thereto. It will also be observed that in each instance there is a cross-tie or rivet holding together the parallel forked arms of the hanger in which the type bar pivot is seated. It will further be observed that in each instance there is formed a tapering throat for the entrance of the tapering end of the screw whereby when the screw is turned toward the type bar pivot those portions of the hanger in rear of the cross-tie are spread apart and the forward portions or pivot bearing jaws are caused to approach each other and thus take up any wear or lost mo tion between the pivot ends and their bearings.

T he pivot bearings may be otherwise constructed than herein shown and described. Likewise various other changes may be made without departing from the spirit of my invention.

hat I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a type bar and hanger pivotally connected together; the hanger supporting a longitudinally arranged screw and having a part for the forward portion of said screw to co-act with to cause the pivotal ends of the hanger to approach each other.

2. In a. typewriting machine, the combination of a type bar and hanger pivotally connected together; the hanger being provided with a cross-tie, a throat in rear thereof, and an adjusting screw supported in the rear end of said hanger and extending toward and adapted to cooperate with said throat.

3. In a typewriting machine, the combination of a type bar and hanger pivotally connected together; the hanger being provided with a throat and a screw arranged longitudinally of said hanger and adapted to co-act with said throat to effect an adjustment of the pivotal portions of the hanger.

4. In a typewriting machine, the combination of a type bar and hanger pivotally connected together; the hanger having a cross-tic in rear of the pivotal portion and a throat and adjusting screw in rear of the cross-tie and supported in the rear end of the hanger with its forward end in operative engagement with said throat.

5. In a typewriting machine, the combination of a type bar and hanger pivotally connected together; the hanger having a cross-tie in rear of the pivotal portion, a throat in rear of the cross-tie, a loop in rear of the throat and a screw passing through said loop and co-acting with said. throat.

6. In a typewriting machine, the combi nation of a type bar and hanger pivotally connected. together; the hanger having a cross-tie in rear of the pivotal portion, bends in rear of the cross-tie, and a screw adapted to cooperate with the bends; said screw being supported in the rear end of the hanger and extending longitudinally thereof to the said bends.

7. In a typewriting machine, the combination of a type bar and hanger pivotally connected together, the hanger being formed of sheet metal folded so as to provide parallel bearing arms, bends and a rear loop; the bends forming a throat and the loop carrying an adjusting screw adapted to cooperate with the throat.

8. In a typewliting machine, the combination of a type bar and hanger pivotally connected together; the hanger having a continuous loop at its rear end and supporting an adjusting screw that is directed to ward the pivotal portion of the hanger, a throat adapted to cooperate with said screw,

and a cross-tie between said throat and said 15 pivotal portion. Signed at Leicester, England, this seventh day of April A. D. 1909.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

